require 'tk'

root = TkRoot.new(title:"hello frame")

root.configure(background:"light grey",padx:12,pady:12)

%w[raised sunken flat groove ridge].each_with_index do |type,i|
	TkFrame.new {
		width "15m"
		height "10m"
		relief type
		borderwidth 4
		#background "dark grey"
		#background "SeaGreen2"
		#background "seagreen2"
		bg "SeaGreen2"
		grid column:i,row:0,padx:"2m",pady:"2m" 
	}
end

Tk.mainloop